Seiko 5R77 Movement Details

Seiko caliber 5R77 is a high grade Spring Drive (automatic winding) watch movement.
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Sub-brands: Credor
Power reserve:72 hours
Accuracy:±15 seconds/month
Day / date?No
GMT / world time?No
Chronograph?No
Hacking?Yes
Rate:32,768 Hz
Number of jewels:30
Notes:Has a power reserve indicator and moon phase function.
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Related movements: 5R67 7R87 7R88 7R89 7R99